The Quest for Interoperable Perovskite Solar Cell Data—Challenges and Opportunities

The recent development of halide perovskite solar cells has been impressive, both in terms of increased performance and in the number of published papers. The sheer number of papers does, however, make it increasingly difficult to get a good overview of the field. It is also difficult to truly take advantage of all device data generated when it is inconsistently formatted and scattered over thousands of papers. During the last few years, I have been working with different strategies for how we can collect past, precent, and future perovskite data in a way that makes it useful beyond its appearance in initial publications. Among those efforts we find the Perovskite Database, which contains formatted device data for over 45000 perovskite devices, and a system for unambiguous communication of perovskite compositions. In this talk, I will demonstrate those initiatives as well as present a few stories showcasing insights enabled by this type of interoperable data. Specific examples will include a quantitative discussion about a discrepancy between short circuit currents extracted from JV and EQE measurements, a reflection about herd behavior in experimental design, and an analysis about to which extent a high device efficiency is needed to write a paper that attracts lots of citations.